First, if friendship is for usefulness or happiness, when this reason does not exist, the end of friendship is natural. If you look at the wrong person, or the other person pretends to cheat, this friendship will inevitably collapse.

Said by: [Ancient Greece] Aristotle: Nicomachean Ethics

Introduction: Aristotle (384 ~ 322 BC), an ancient Greek philosopher, is one of the great philosophers, scientists and educators in the ancient history of the world, and can be called a master of Greek philosophy. He is Plato's student and Alexander's teacher.

Second, make friends with interests, you will make friends with them, and you will have real friendship. Proper friendship must be devoted to moral cultivation.

Said by: [Ancient Greece] Plato: Plato's five dialogues.

Friendship only exists between moral people, who are similar to each other.

From: [Ancient Greece] Zhi Nuo: Records of the Words and Actions of Famous Philosophers.

Introduction: Zhi Nuo (about 490- 425 BC), Elijah of Zhi Nuo, was born in Elijah in the south of Italian Peninsula. Ancient Greek mathematician and philosopher, famous for Zeno's paradox.

Fourth, don't have no friends or too many friends.

Said by: [Ancient Greece] Aristotle: The Ethics of Nico Kyle.

Five, should only make friends with good people, should not make friends with bad people, and make friends with bad people themselves will become bad, commonly known as the near ink black.

Said by: [Ancient Greece] Aristotle: The Ethics of Nico Kyle.